The birds of Pembrokeshire and its islands - Mathew, Murray A. (R.H. Porter, 1894)

Birds of Pennsylvania. Provisional list, including natives, permanent residents, winter residents, spring and fall migrants, occasional visitants and "stragglers" or accidental visitants - Warren, Benjamin Harry, 1858 -1926

Birds of Prince Edward Island : their habits and characteristics - Bain, Francis, 1842 -1894 (Haszard & Moore, 1891)

Birds of Prince Edward Island their habits and characteristics - Bain, Francis, 1842 -1894 (s.n.], 1891)

The birds of Rhode Island - Howe, Reginald Heber, Jr. 1875 -1932 (1899)

The birds of Siberia; a record of a naturalist's visits to the valley of the Petchora and Yenesei - Seebohm, Henry, 1832 -1895 (J. Murray, 1901)

The birds of Siberia; a record of a naturalist's visits to the valleys of the Petchora and Yenesei - Seebohm, Henry, 1832 -1895 (J. Murray, 1901)

The birds of Somersetshire - Smith, Cecil, 1826 -1890 (John van Voorst, 1869)

The birds of South Africa - Sclater, William Lutley, 1863 -1944 (R. H. Porter, 1900)

The birds of South Africa - Sharpe, Richard Bowdler, 1847 -1909 (Bernard Quaritch, 1875)

The birds of South Africa : a descriptive catalogue of all the known species occurring south of the 28th parallel of south latitude - Layard, Edgar Leopold, 1824 -1900 (Juta, 1867)

The birds of the Bermudas - Reid, Savile Grey, 1845 -1915 (Bermuda, Printed at the Royal Gazette Office, 1883)

Birds of the British Empire - Greene, W. T. (William Thomas) (Imperial Press, 1898)

The birds of the British Isles and their eggs. First series, Comprising families Corvidae to Sulidae - Coward, T. A. (Thomas Alfred), 1867 -1933 (F. Warne, 1919)

Birds of the British Isles - Duncan, John, of Newcastle upon Tyne. (W. Scott, 1898)

Birds of the British Isles - Duncan, John. (W. Scott, 1898)

The birds of the Cambridge region of Massachusetts - Brewster, William, 1851 -1919 (The Club, 1906)

The birds of the Chicago area - Woodruff, Frank Morley (Jennings and Graham], 1907)

Birds of the Colorado valley ... scientific and popular information concerning North American ornithology - Coues, Elliott, 1842 -1899 (Gov't print. off, 1878)

Birds of the Colorado valley ... scientific and popular information concerning North American ornithology - Coues, Elliott, 1842 -1899 (Govt. Print. Off, 1878)

The birds of the Connecticut valley in Massachusetts - Colburn, William W. (Clark W. Bryan, printer, 1891)

Birds of the Humber District - Cordeaux, John. (Van Voorst, 1872)

Birds of the Indian hills - Dewar, Douglas, 1875 -1957 (John Lane, 1915)

The birds of the Japanese Empire - Seebohm, Henry, 1832 -1895 (R. H. Porter, 1890)

Birds of the Kilbuck and Ahklun mountain region, Alaska - U.S. Fish; Wildlife Service (U.S. Dept. of the Interior, Fish and Wildlife Service, 1991)

Birds of the Northwest: a hand-book of the ornithology of the region drained by the Missouri River and its tributaries - Coues, Elliott, 1842 -1899 (Govt. Print. Off, 1874)

The birds of the Rio Madeira - Hellmayr, Carl Eduard, 1878 -1944 (Novitates Zoologicae, 1910)

Birds of the Rockies - Keyser, Leander S. (Leander Sylvester), 1856 -1937 (A. C. McClurg and co, 1902)

Birds of the United States east of the Rocky Mountains, a manual for the identification of species in hand or in the bush - Apgar, A. C. (Austin Craig), 1838 -1908 (American book company, 1898)

Birds of the United States east of the Rocky Mountains; a manual for the identification of species in hand or in the bush - Apgar, A. C. (Austin Craig), 1838 -1908 (American Book Co, 1898)